porous wall in cfx

bitak · October 2, 2012, 09:40

hello.
I want to simulate an tube by cfx that its wall is porous.
who can help me?

energy382 · October 2, 2012, 10:55

you've to put a more specific request

so start reading user manual, mesh your geometry etc....

back on topic: you have to make a porous domain, GGI (fluid/porous) and define your porosity settings (e.g. loss modell)

bitak · October 3, 2012, 12:34

hey.

my boundary condition is porous.
i want to know how i can simulate porous wall in cfx.
i think i need to import expression.what is your idea?
merc

evcelica · October 3, 2012, 16:47

Never heard of a porous boundry condition???
Maybe you mean a porous domain? Just create a domain, and in CFX choose porous domain instead of fluid or solid. Then insert your parameters which describe the porosity.

bitak · October 4, 2012, 04:57

i want to simulate a mass transfer blood vessel wall.
how i can start by CFX ?
you think my bondary condition for wall is porous or i should define a porous domain around vessel?
tanx

cdegroot · October 7, 2012, 11:46

If you care about the details inside the wall, then add a porous domain and model it. If not, just formulate it as a boundary condition. I don't think you will find a "porous" boundary condition though. Think about what it is your porous boundary is supposed to represent and that should help you figure out what you need to impose as a bc. Maybe a mass source or sink?

bitak · October 7, 2012, 14:24

thanks all.

October 2, 2012, 09:40	porous wall in cfx	#1
bitak Member bitak Join Date: Jul 2009 Posts: 56 Rep Power: 17	hello. I want to simulate an tube by cfx that its wall is porous. who can help me?

October 3, 2012, 12:34	cfx porous wall	#3
bitak Member bitak Join Date: Jul 2009 Posts: 56 Rep Power: 17	hey. my boundary condition is porous. i want to know how i can simulate porous wall in cfx. i think i need to import expression.what is your idea? merc

October 4, 2012, 04:57	cfx porous wall	#5
bitak Member bitak Join Date: Jul 2009 Posts: 56 Rep Power: 17	i want to simulate a mass transfer blood vessel wall. how i can start by CFX ? you think my bondary condition for wall is porous or i should define a porous domain around vessel? tanx

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October 2, 2012, 10:55		#2
energy382 Senior Member Christoph Join Date: May 2011 Location: Germany Posts: 182 Rep Power: 18	you've to put a more specific request so start reading user manual, mesh your geometry etc.... back on topic: you have to make a porous domain, GGI (fluid/porous) and define your porosity settings (e.g. loss modell)

October 3, 2012, 16:47		#4
evcelica Senior Member Erik Join Date: Feb 2011 Location: Earth (Land portion) Posts: 1,186 Rep Power: 23	Never heard of a porous boundry condition??? Maybe you mean a porous domain? Just create a domain, and in CFX choose porous domain instead of fluid or solid. Then insert your parameters which describe the porosity.

October 7, 2012, 11:46		#6
cdegroot Senior Member Chris DeGroot Join Date: Nov 2011 Location: Canada Posts: 414 Rep Power: 18	If you care about the details inside the wall, then add a porous domain and model it. If not, just formulate it as a boundary condition. I don't think you will find a "porous" boundary condition though. Think about what it is your porous boundary is supposed to represent and that should help you figure out what you need to impose as a bc. Maybe a mass source or sink?

October 7, 2012, 14:24		#7
bitak Member bitak Join Date: Jul 2009 Posts: 56 Rep Power: 17	thanks all.